Plugin for injecting polyfills [Not using vite-plugin-legacy]

[zheeeng]

Description

Some users are using older-version-browsers. Their browsers support ES module but lack some modern ECMA API. Using polyfill is necessary.

For internal network sake, we can't use the service provided by polyfill.io, I'm expecting a plugin for injecting polyfill automatically.

Suggested solution

An official plugin for handing polyfill instead of a built-in feature of vite-plugin-lagecy.

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[patak-dev]

I think this could be solved out of core by a community plugin. If you see a feature in core that is required, please create a feature request for it. Moving in the meantime to a discussion.

[zheeeng]

BTW, vite-plugin-legacy must be installed with terser, it is unnecessary. Maybe we need a plugin with a pure purpose for polyfill.

[bluwy]

I think this is already supported in plugin-legacy through setting modernPolyfills and set renderLegacyChunks: false. Maybe we could remove the need for terser for configuration like this.

[zheeeng]

Making terser optional is a great idea, but it seems a little wired that use the legacy plugin to patch the modern polyfills.

[bluwy]

I agree with that too as it's not obvious in hindsight. But since the functionality is closely related and shared, it was built that way 😬 Anyways I've submitted a PR to make it optional: #9453